DESCRIPTION: Universal E-Paper Driver Board With WiFi / Bluetooth SoC ESP32 Onboard, Supports Various SPI E-Paper Raw Panels, E-PAPER ESP32 DRIVER BOARD, Comes with Android APP An To Display Images On E-Paper From PC / Smart Phone Via WiFi / BluetoothFeatures At A Glance: -Paper ESP32 Driver Boardis a wireless solution for refreshing e-Paper display content, suitable for applications such as: supermarket price tag, e-Card, serial port monitoring, etc. Onboard ESP32, supports For developmentProvides Android APP, allows to refresh display content via Bluetooth Provides HTML host code, allows to refresh display content via remote webpage, suitable for Internet applications Supports Floyd- dithering algorithm, more color combinations, better shadow rendering for the imageSupports popular image formats: BMP, JPEG, GIF, PNG, etc.Comes with development resources and manualSpecifications:WIFI PROTOCOL: 802.11b/gBLUETOOTH PROTOCOL: Bluetooth 4.2,including traditional BR/, and low power INTERFACE: 3-wire SPI, 4-wire SPI (default)OPERATING VOLTAGE: 5VOPERATING CURRENT: 50mA ~ 150mALOW POWER CURRENT: Less than 2mA (cut off power supply for CP2102)DIMENSIONS: 29.46 x 48.25mmTransmitting Image Via Bluetooth Comes With Android APP, Easy To Usefor reference only, e-Paper display is NOT included.Resources for different product , please check the page to confirm the actually provided resources.Color: BlueMaterial: PC+metalPackage Contents:1 x Universal e-Paper ESP32 Driver BoardOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.